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Upper-limit luminance for the surface-color mode appearance.

Y Yamauchi1, K Uchikawa

  • 1Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, Yokohama, Japan.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|November 4, 2000
PubMed
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Brightness determines how we perceive color modes. The brightest surrounding stimulus acts as a cue, influencing color appearance judgments in experiments measuring upper-limit luminance.

Area of Science:

  • Visual perception
  • Color science
  • Psychophysics

Background:

  • Understanding color appearance modes is crucial for visual science.
  • Previous research has explored factors influencing color perception, but determinants for surface-color mode remain under investigation.

Purpose of the Study:

  • To identify the key determinants for the surface-color mode of appearance.
  • To measure the upper-limit luminance of a color chip that defines the boundary of surface-color appearance.

Main Methods:

  • Experiments utilized a CRT color monitor to present test and surround stimuli.
  • Observers adjusted the luminance of a central color chip until it no longer appeared in the surface-color mode.
  • Stimuli consisted of a 3x3 array of color chips on a gray background with a white frame.

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Main Results:

  • The upper-limit luminance varied among test colors, but their calculated brightnesses were consistent.
  • Brightness of the test color was found to be a primary determinant for the mode of color appearance.
  • Surrounding color chips influenced results, with the brightest surround acting as a critical cue.

Conclusions:

  • The brightness of a target color is a significant factor in determining its mode of appearance.
  • The brightest surround stimulus plays a crucial role in guiding perceptual judgments of color mode.
  • Experimental findings contribute to a deeper understanding of the psychophysics of color vision.